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Please Please help with Microwaves

by stunner5000pt
Tags: microwaves
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stunner5000pt
#1
Jan21-05, 03:22 PM
P: 1,440
We were asked to make an educated guess of how the following would react - as transmitters, reflector, partial reflect, or absorder when a plate of the following was placed at a 45 degree angle as shown in the attachment

The transmitter transmits microwves in a straight line and the following are placed along the solid line that is drawn between. The Detectors will detect whether the microwaves are reflected or absorbed

The following were placed al9ong the solid line - Nothing, Wood frame wrapped with Aluminium foil, Solid Aluminium plate, Plexiglass, Solid Copper plate, and a Wire Mesh

Following are what i mthink may happen.

When nothing is placed then detector 1 will detect all of the microwaves that were transmitted because nothing is obsturcting the waves. Nothing will be detected at detector 2

When aluminium foil wrapped on wood frame is placed it will reflect all but since it is thin it will transmit some and the wood block with abosrb whatever is transmitted.
When a solid aluminium plate is placed it will reflect all of the light?

When plexiglass is placed it will abosrob all teh light??

When a solid copper plate is placed it iwll reflect all

When a mire mesh is placed it iwll reflect all of it ??
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Gokul43201
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Jan22-05, 01:00 PM
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Quote Quote by stunner5000pt
We were asked to make an educated guess of how the following would react - as transmitters, reflector, partial reflect, or absorder when a plate of the following was placed at a 45 degree angle as shown in the attachment

The transmitter transmits microwves in a straight line and the following are placed along the solid line that is drawn between. The Detectors will detect whether the microwaves are reflected or absorbed

The following were placed al9ong the solid line - Nothing, Wood frame wrapped with Aluminium foil, Solid Aluminium plate, Plexiglass, Solid Copper plate, and a Wire Mesh

Following are what i mthink may happen.

When nothing is placed then detector 1 will detect all of the microwaves that were transmitted because nothing is obsturcting the waves. Nothing will be detected at detector 2

When aluminium foil wrapped on wood frame is placed it will reflect all but since it is thin it will transmit some and the wood block with abosrb whatever is transmitted.
In fact, it will transmit most of the waves if it is thin compared to the wavelength. Typical aluminum foil is less than 1mm thick, and the microwave wavelength is about 12 cm. So, most of the energy will be transmitted through the foil and absorbed by the wood. A little bit will be reflected.

When a solid aluminium plate is placed it will reflect all of the light?

When plexiglass is placed it will abosrob all teh light??
Depending on the thickness, but I think this is mostly right. Thin plexiglass will transmit some too.

When a solid copper plate is placed it iwll reflect all

When a mire mesh is placed it iwll reflect all of it ??
I think you've got it all.


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